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Adsorption of Phosphate and Water‐extractable Soil Organic Material by Synthetic Aluminum Silicates and Acid Soils
Author(s) -
Yuan T. L.
Publication year - 1980
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1980.03615995004400050015x
Subject(s) - organic matter , adsorption , soil water , environmental chemistry , chemistry , soil organic matter , ultisol , soil science , geology , organic chemistry
Three synthetic Al silicates with different Si/Al ratios and soil samples from a Eutrandept, a Paleudult, and a Haplaquod, were separately treated with P and hot water‐extractable soil organic materials. The Al silicate with the lowest Si/Al ratio retained the most P but the least organic materials. The Paleudult which had a lower P adsorption capacity retained more organic matter than the Eutrandept. The Haplaquod had the lowest P and organic matter retention. Pretreatment of soils with organic material had varied effects on subsequent P adsorption. Pretreatment of soils with P reduced the adsorption of organic material, but at all organic matter levels the P adsorption was constant. The findings suggested that the sites for organic matter and P adsorption may differ, but certain sites seem to adsorb both P and organic matter.